I developed www.uroomsurf.com for a client. We launched it yesterday at 1:00 AM. Over the course of the first day of operations, the site received 10,000 visits and 100,000 pageviews. HOLY MOTHER OF GOD! We're having problems adjusting to the traffic... looking at buying a 4x Quad-Core (16 processors!!) 64 Gig RAM RAID server to handle the load!
Check the Google Analytics for first day of traffic!!!! (below)
I should mention that the kids who came up with this idea have done NO ADVERTISING WHATSOEVER!!! All they've been doing is telling people about it on Facebook!!!
Check their Facebook fanpage at www.facebook.com/uroomsurf
You can see that they're very interactive with their members, and address all feedback almost immediately. This is by far the biggest social network marketing success I've ever been involved with. Good case study for anyone interested!!!